<?php
try {
   $sClient = new SoapClient('http://www.w3schools.com/webservices/tempconvert.asmx?WSDL');

   /* Set search parameters */
   $params = array('Fahrenheit'=>'37');

   /* Make request and dump response */
   $response = $sClient->FahrenheitToCelsius($params);
   var_dump($response);
} catch (SoapFault $e) {
   /* Dump any caught SoapFault exceptions */
   var_dump($e);
}